1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
package dhcpv6
import (
"bytes"
"net"
"testing"
"github.com/stretchr/testify/require"
)
func TestDHCPv6Relay(t *testing.T) {
ll := net.IP{0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xaa, 0xbb, 0xcc, 0xff, 0xfe, 0xdd, 0xee, 0xff}
ma := net.IP{0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}
r := DHCPv6Relay{
messageType: MessageTypeRelayForward,
hopCount: 10,
linkAddr: ll,
peerAddr: ma,
// options is left empty here for testing purposes, even if it's
// mandatory to have at least a relay message option
}
if mt := r.Type(); mt != MessageTypeRelayForward {
t.Fatalf("Invalid message type. Expected %v, got %v", MessageTypeRelayForward, mt)
}
if hc := r.HopCount(); hc != 10 {
t.Fatalf("Invalid hop count. Expected 10, got %v", hc)
}
if la := r.LinkAddr(); !bytes.Equal(la, ll) {
t.Fatalf("Invalid link address. Expected %v, got %v", ll, la)
}
if pa := r.PeerAddr(); !bytes.Equal(pa, ma) {
t.Fatalf("Invalid peer address. Expected %v, got %v", ma, pa)
}
if opts := r.Options(); len(opts) != 0 {
t.Fatalf("Invalid options. Expected none, got %v", opts)
}
}
func TestDHCPv6RelaySettersAndGetters(t *testing.T) {
r := DHCPv6Relay{}
// set and get message type
r.SetMessageType(MessageTypeRelayReply)
if mt := r.Type(); mt != MessageTypeRelayReply {
t.Fatalf("Invalid message type. Expected %v, got %v", MessageTypeRelayReply, mt)
}
// set and get hop count
r.SetHopCount(5)
if hc := r.HopCount(); hc != 5 {
t.Fatalf("Invalid hop count. Expected 5, got %v", hc)
}
// set and get link address
r.SetLinkAddr(net.IPv6loopback)
if la := r.LinkAddr(); !bytes.Equal(la, net.IPv6loopback) {
t.Fatalf("Invalid link address. Expected %v, got %v", net.IPv6loopback, la)
}
// set and get peer address
r.SetPeerAddr(net.IPv6loopback)
if pa := r.PeerAddr(); !bytes.Equal(pa, net.IPv6loopback) {
t.Fatalf("Invalid peer address. Expected %v, got %v", net.IPv6loopback, pa)
}
// set and get options
oneOpt := []Option{&OptRelayMsg{relayMessage: &DHCPv6Message{}}}
r.SetOptions(oneOpt)
if opts := r.Options(); len(opts) != 1 || opts[0] != oneOpt[0] {
t.Fatalf("Invalid options. Expected %v, got %v", oneOpt, opts)
}
}
func TestDHCPv6RelayToBytes(t *testing.T) {
expected := []byte{
12, // MessageTypeRelayForward
1, // hop count
0xff, 0x01, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x01, // link addr
0xff, 0x02, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x02, // peer addr
// option relay message
0, 9, // relay msg
0, 10, // option length
// inner dhcp solicit
1, // MessageTypeSolicit
0xaa, 0xbb, 0xcc, // transaction ID
// inner option - elapsed time
0, 8, // elapsed time
0, 2, // length
0, 0,
}
r := DHCPv6Relay{
messageType: MessageTypeRelayForward,
hopCount: 1,
linkAddr: net.IPv6interfacelocalallnodes,
peerAddr: net.IPv6linklocalallrouters,
}
opt := OptRelayMsg{
relayMessage: &DHCPv6Message{
messageType: MessageTypeSolicit,
transactionID: TransactionID{0xaa, 0xbb, 0xcc},
options: []Option{
&OptElapsedTime{
ElapsedTime: 0,
},
},
},
}
r.AddOption(&opt)
relayBytes := r.ToBytes()
if !bytes.Equal(expected, relayBytes) {
t.Fatalf("Invalid ToBytes result. Expected %v, got %v", expected, relayBytes)
}
}
func TestNewRelayRepFromRelayForw(t *testing.T) {
// create a new relay forward
rf := DHCPv6Relay{}
rf.SetMessageType(MessageTypeRelayForward)
rf.SetPeerAddr(net.IPv6linklocalallrouters)
rf.SetLinkAddr(net.IPv6interfacelocalallnodes)
rf.AddOption(&OptInterfaceId{})
rf.AddOption(&OptRemoteId{})
// create the inner message
s, err := NewMessage()
require.NoError(t, err)
s.AddOption(&OptClientId{})
orm := OptRelayMsg{}
orm.SetRelayMessage(s)
rf.AddOption(&orm)
a, err := NewAdvertiseFromSolicit(s)
require.NoError(t, err)
rr, err := NewRelayReplFromRelayForw(&rf, a)
require.NoError(t, err)
relay := rr.(*DHCPv6Relay)
require.Equal(t, rr.Type(), MessageTypeRelayReply)
require.Equal(t, relay.HopCount(), rf.HopCount())
require.Equal(t, relay.PeerAddr(), rf.PeerAddr())
require.Equal(t, relay.LinkAddr(), rf.LinkAddr())
require.NotNil(t, rr.GetOneOption(OptionInterfaceID))
require.NotNil(t, rr.GetOneOption(OptionRemoteID))
m, err := relay.GetInnerMessage()
require.NoError(t, err)
require.Equal(t, m, a)
rr, err = NewRelayReplFromRelayForw(nil, a)
require.Error(t, err)
rr, err = NewRelayReplFromRelayForw(&rf, nil)
require.Error(t, err)
}
|
